A car with 'windows and doors shut is safe during thunderstorm.

Explanation

**Step-by-Step Solution:**

1. **Understanding the Situation**: During a thunderstorm, lightning can strike objects on the ground, including vehicles. It is essential to understand how a car can provide safety in such conditions.

2. **The Concept of a Faraday Cage**: A car, when closed (with windows and doors shut), acts like a Faraday cage. A Faraday cage is an enclosure made of conductive material that protects the inside from external electric fields.

3. **Conductive Material**: The body of the car is made of metal, which is a good conductor of electricity. When lightning strikes the car, the electrical current travels along the metal surface and does not enter the interior of the vehicle.

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